Casting rule holding unit for stamping forms



FOR STAMPING FORMS 3 Sheets-Sheet 1 11v VENTOR W. C. TOLAN D CASTINGRULE HOLDING UNIT Filed Nov. 22, 1940 Oct. 20, 1942.

Oct. 20, 1942.

CASTiNG RULE HOLDING UNIT FOR S TAMPING FORMS Filed Nov.- 22, 1940 3Sheets-Sheet 2 J7 .33 [32: as 52 33 K v 48 48 37 43 59' 4/ 43 48 i j il- 5 4g V k INVENTOR A TTORNE yr w. c. TOLAND 2,299,191-

Oct. 20, 1942. w. c. TOLAND 2,299,191

CASTING RULE HOLDING UNIT FOR STAMPING FORMS Filed Nov. 22, 1940 v sSheets-Sheet 5' INVENTOR Patented Oct. 20, 1942 CASTING RULE HOLDINGUNIT FOR- STAMPING FORMS William Craig Toland, Brookline, Mass.,assignor to Mergenthaler Linotype Company, a corporation of New YorkApplication November 22, 1940, Serial No.

16 Claims.

This invention relates to slug casting machines of the generalorganization represented in U. S. Letters Patent to O. Mergenthaler No.436,532 wherein a melting pot is arranged to deliver molten metal into aslotted mold to produce a type bar or slug. More specifically, itrelates to means which enables slugs to be cast in machines of this typewhich thereafter may be used as furniture to support the rules in astamping form, as, for example, the rules employed to cut and scoreblanks capable of being folded to form cartons and the like.

When making up such. forms the rules are usually supported in thedesired position by means of furniture which heretofore has been sawedfrom Wood or metal. While this arrangement for supporting the rules issatisfactory it is, nevertheless, open to the criticism thatconsiderable expense is involved in sawing out and hand finishing thefurniture to bring it to the exact shape required to support the rulesin the various positions they must be held during the stampingoperation.

In accordance with the present invention, however, such furniture iseconomically produced by casting the same in machines of the typementioned above. In such machines, the mold cavity in which the slug iscast is usually defined by four distinct parts, namely, a cap portion, abody portion and two end liners. These liners are of various thicknessand are selectively employed to vary the dimension of the mold slot orcavity according to the size of the slug to be cast. When furniture forsupporting rules disposed parallel to the sides of the form is desiredit may be cast in such molds in the usual manner in the form of blankslugs of standard sizes, and if necessary the slugs thus cast maythereafter be sawed to desired sizes. The sawing thus required, however,will be along lines at right angles to one of the edges of the slug inwhich case it may be done economically in the manner Well understood inthe art. However, when it is desired to cast furniture for supportingrules in say curved or angular positions the mold is provided with acasting face which is so shaped that when a slug is cast it will have asupporting face adapted to hold the rule in the desired form orposition. The casting face for thus shaping the slug may be presented ina number of ways. For example, it may be presented by shaping one of theend liners (preferably the left hand end liner) or it may be presentedby one or more core members positioned in the mold slot. To a largedegree, the manner in which the casting face is presented depends on theconfiguration of the rules to be supported. For example, if a curved oran angularly disposed portion of a rule is followed by a relatively longstretch of straight rule it might be advantageous to shape the end linerso that a blank slug of standard length having a curved or a tapered endwill be cast. On the other hand, if a curved or an angularly disposedportion of a rule joins with another curved or angularly disposedportion or with a relatively short stretch of straight rule it might beadvantageous to employ one or more core sections in the mold slot and toso shape the casting faces thereof that when a slug is cast it willcomprise two or more units For a more detailed description of theinvention reference may be made to the accompanying drawings. In thesedrawings, however, the invention has been shown merely by way of exampleand in preferred form, and obviously many variations and modificationsmay be made therein which will still be comprised within its spirit. Itis to be understood, therefore, that the invention is not limited to anyspecific form or embodiment, except insofar as such limitations arespecified in the appended claims.

Referring to the drawings- Figure l is a plan view of a portion of aform made up to stamp out a plurality of carton making blanks.

Figure 2 is a plan view of a blank cut and creased by the form shown inFigure l.

Figure 3 is a sectional view taken along the line 3-3 of Figure 1.

Figure 4 is an enlarged View showing the cutting and creasing rulesemployed in the form.

Figure 5 is a front view of a mold modified in accordance with thepresent invention.

Figure 6 is a sectional view taken along the line 6-5 of Figure 5. t

Figure 7 is a plan view showing the manner in which the slug units maybe broken apart.

Figure 8 is a perspective view of a slug unit forming core member.

Figure 9 is a perspective view of a slug unit separating core member.

Figure 10 is a perspective view of a slug cast in a mold modified inaccordance with the present invention.

Figure 11 is a front view of the slug shown in Figure 10; and

Figure 12 is a front view of a slug cast in another mold modified inaccordance with the present invention.

having faces adapted tosupport the rules in the desired form orposition.

As usual when assembling a form (see Figure 1) to stamp out blanks 20 ofthe sort shown in Figure 2, cutting and creasing rules 2|, 22 aresupported in desired position by furniture in a chase 23 and theassembly thus formed is locked by means of quoins 24.

The cutting rules 2i (see Figure 3) are adapted and arranged to cutthrough the material 25 from which the blanks are to be made in themanner shown by full lines in Figure 2 while the creasing rules 22 areadapted and arranged to simply score or crease the blanks in the mannershown by the dotted lines in Figure 2.

As stated heretofore, the purpose of the present invention is to enablethe furniture used to support the cutting and creasing rules to be castas slugs in machines of the type beforementioned wherein the moldsusually employed comprise a body portion 23, a cap portion 21, and apair of end liners 23, 29 which define a mold slot or cavity 39 in whichthe slug is cast. Also, as stated heretofore, the end liners 28, 29 areof various thicknesses and they are selectively employed to vary thedimensions of the mold slot or cavity 30 according to the size of theslug to be cast.

By referring to Figure 1, it is seen that six curved cutting rules 25ato 2| and four angularly disposed cutting rules 2 i g to 2 I arerequired to stamp out each blank. The remainder of the rules, bothcutting and creasing, are positioned parallel with or at right angles toone another and to the sides of the form. In consequence, the majorportion of the furniture needed to support the rules may be cast asblank slugs in the usual manner in the molds of such machines. Theseslugs may be cast in standard sizes, preferably in multiples of thespace they are to occupy. If necessary, however, the slugs so cast maybe sawed to the exact size required to fill in a given space, but, asstated heretofore, the sawing thus required will be along lines parallelto one face of the slug in which case it may be accomplishedinexpensively. As usual, when the slugs thus cast are of the largersizes, the cap portion of the mold is provided with depending coremembers so that the slugs will be of the socalled skeleton type.

The remaining portion of the furniture needed to support the rules mayalso be cast in the form of blank slugs in such molds, but since theseslugs must present curved and angularly disposed supporting faces toaccord with the curved and angularly disposed rules, the molds must bemodified accordingly.

In the form shown in Figure 1, the rules are so curved that theduplicate of a slug shaped to support the inner or the outer face of onerule may be used to support the inner or the outer face of another ruleby placing the slug face up or face down as may be necessary. In theform shown, however, it is to be noted that the adjacent ends of curvedrules Elia, Zlb and the adjacent ends of curved rules 2 lo, 2! d areseparated by a short stretch of a straight rule while the adjacent endsof the remaining two curved rules 2! e, 2 employed to stamp out a blankare separated by a much longer stretch of straight rule. Furthermore, itis to be noted that since the straight rules between the ends of thecurved rules are utilized to cut the ends of adjacent blanks, a shoulder3! is formed Where the ends of the curved rules join this straightcutting rule so employed. Under these conditions it is deemed advisablethat the mold be modified to cast slug units shaped to support the outerside faces of the curved rules and slug units shaped to support theinner side faces of the curved rules and one half the short stretch ofstraight rule which separates adjacent ends of the curved rules. Tothese ends, a plurality of slug unit forming core members 32 (see Figure8) and a plurality of slug unit separating core members 33 (see Figure9) are positioned in the mold slot or cavity (see Figure 5). Each coremember is provided with a foreand-aft tongue 34 which is positioned in aforeand-aft groove 35 formed in the body portion 25 of the mold to holdthem against lateral displacement during the casting and ejectingoperations. In addition, the core members are held against forwarddisplacement during the casting and ejecting operations by the heads ofstuds 36 threaded into the body portion 26 of the mold. The front faceof each core member is provided with a transverse groove 31 in which iscast a bar 38 to connect the slug units together, this being desirableso that the slug units after being ejected from the mold may be stackedin a galley in the usual manner. The bar 33 thus formed, however, isfragile so that the units may be easily broken apart. In addition, thecasting faces of the core members are formed with foreand-aft ribs 39which form fore-and-aft recesses 40 in the faces of the slug units wherethe bar 38 connects'them so that the slug units may be broken apartwithout leaving ragged edges projecting beyond the supporting faces ofthe slug units.

The casting faces 4!, Q2 of the slug unit separating core members 32save for the ribs 39 are squared with respect to the casting face of thebody portion of the mold, so that when the slug units are broken apartone end of the slug units may be squared up with regular slugs in theform.

One of the casting faces 43 of the slug unit forming core members 33,save for the rib 39, is shaped to accord with the outer side face of thecurved rules and the other casting face 44 save for the rib 39 is shapedto accord with the inner side of the curved rules, with the shoulderformed where the curved rules meet the straight rules and with one halfthe inner side face of the short stretch of straight rules positionedbetween adjacent ends of the curved rules.

Under these conditions slugs of standard lengths may be cast comprisinga number of units 45 having a face adapted to support the outer side ofthe curved rules and a number of units 48 having a face adapted tosupport the inner side face of the curved rule and one half the lengthof the inner face of the adjacent short stretch of straight rule. Whenthese slugs are broken apart one unit #35 may be used to support theouter face of a curved rule and another unit it used to support theinner face of the curved rules and one half the length of the shortstretch of the straight rule which extends between adjacent ends of thecurved rules. In like manner duplicates of these slug units 45 may beused to support the outer faces of the remainder of the curved rules byplacing them face up or face down as may be required and duplicates ofslug units 46 may be used to support the inner faces of the remainder ofthe curved rules by placing them face up or face down as may berequired, In the two cases where the ends of the curved rules areseparated by a short stretch of straight rule two slug units 46 are allthat is required. In the remaining case, a length of a standard slugwill have to be interposed between the ends of the slug units. Incertain cases, it may be necessary to saw the slug units 45 cast tosupport the outer side faces of the curved rules to make them fit intothe form but such sawing will be at right angles to one of the faces inwhich case it may be done economically. In the event the slug units thusrequired to support the curved rules are of the larger sizes, as theyare in the form shown, the cap portion of the mold may be provided withdepending core members 48 so that the slug units will be of the skeletontype.

In the form shown in Figure 1, it is also to be noted that the angularlydisposed cutting rules 2lg and 2| are all disposed at the same anglewith respect to the sides of the form. In modifying a standard mold sothat the slug units may be cast therein which are capable of being usedto support these rules in the desired position, the slug unit formingcore members 33 instead of being provided with curved casting faces areprovided with casting faces shaped to produce slug units shown in Figure12 where the upper faces thereof taper in accordance with the angle atwhich the rules are to be supported, In using these slug units one ispositioned on one side and another postioned on the other side of therule. When necessary these slug units may be sawed along straight linesto bring them to the desired dimensions to fit into the form.

It will be understood that when casting such blank slugs, the front andrear faces of the mold cavities defined by the core members 32, 33 areclosed, their front faces being closed by the left-hand jaw or by ablank filling piece and their rear faces being closed by the mouthpieceof a metal pot from which molten metal is forced by the action of a pumpthrough a plurality of small orifices in the mouthpiece into the moldcavities and up against the front closure to form the connected slugunits.

It will be also understood that when ejecting such slugs, the ejectormechanism usually employed in such machines must be so modified as toprevent the core members 32, 33 from being disturbed during the ejectingoperation.

Having thus described my invention what I claim is:

1. In or for a slug casting machine, a slug casting mold, and a coremember positioned in said mold to divide the same into separate castingcavities, said core member having casting faces which are shaped toaccord with the opposite side faces of a rule located in a stamping formin a position other than parallel with one side of the form.

2. In or for a slug casting machine, a slug casting mold, and a coremember positioned in the mold to divide it into separate castingcavities, said core member having casting faces which are shaped toaccord with the opposite side faces of a curved rule positioned in astamping form.

3. The arrangement set forth in claim 1 characterized in that the coremember is provided with a face groove which establishes communicationbetween the cavities.

4. In or for a slug casting machine, a slug casting mold comprising abody portion, a cap portion and end liners which define a mold cavity,core members located in said cavity to divide the same into a number ofcavities, one of said core members having a pair of casting faces whichare shaped to accord with the opposite side faces of a rule located in astamping form in a position other than parallel with one side of theform, and another of said core members having a pair of complementarycasting faces.

5. The arrangement set forth in claim 4 characterized in that said coremembers are provided with face grooves which establish communicationbetween said cavities.

6. The arrangement set forth in claim 4 characterized in that the frontfaces of the core members are provided with grooves which establishcommunication between the cavities and in that the side faces of thecore members are provided with ribs which extend rearwardly from theface grooves.

7. In or for a slug casting machine, a slug casting mold comprising acap portion, a body portion and end liners which define a mold cavity,and a core member supported within the cavity, said core member having apair of casting faces which taper with respect to the casting face of ofthe body portion of the mold.

8. In or for a slug casting machine a slug casting mold comprising a capportion, a body portion and end liners which define a mold cavity, and acore member supported within the cavity, said core member having a pairof curved casting faces.

9. In or for a slug casting machine, a slug casting mold adapted toproduce a slug having a face which extends in other than a continuousstraight line with respect to its base.

10. In or for a slug casting machine, a slug casting mold adapted toproduce a slug having a curved face.

11. In or for a slug casting machine, a slug casting mold comprising acap portion, a body portion and end liners which define a mold cavity,and a core member secured in said cavity to divide the same intoseparate cavities, said core member having a casting face which taperswith respect to the casting face of the body portion of the mold.

12. In or for a slug casting machine, a slug casting mold comprising acap portion, a body portion and end liners which define a mold cavity,and a core member secured in said cavity to divide the same intoseparate cavities, said core member having a curved casting face,

13. In or for a slug casting machine, a slug casting mold comprising acap portion, a body portion and end liners which define a mold cavity,and a core member secured in said cavity to divide the same intoseparate cavities, said core member having a casting face shaped toaccord with one of the side faces of a rule to be supported in astamping frame.

14. A casting metal slug comprising a plurality of spaced apart rulesupporting units connected together by fragile metal linkage.

15. A cast metal slug comprising'spaced apart complementary rulesupporting units formed to accord with the shape of opposite side facesof a rule and connected together by fragile metal linkage.

16. A cast metal slug comprising a plurality of pairs of spaced apartcomplementary rule supporting units connected together by fragile metallinkage, the units of each pair being formed to accord with the shape ofopposite side faces of a rule.

WILLIAM CRAIG TOLAND.

